Fitting The Secondary Diode - Fronius TransPocket 1500 Service Manual

Fitting the
secondary diode
Fig.9
All parts must be kept clean! Any contamination between the secondary diode and the
heat sink will impair the heat-transfer.
Fig.10
Fig.11
(60)
Note! When mounting the secondary diode, make sure that the U-shaped
recess (60) is pointing towards the transformer.
(50) (61)
(31) (31)
58
- Pre-clean the heat sink with contact
spray and a non-linting cloth
- Remove any contamination or
unevenness from the heat sink with
fine abrasive paper (grain P 500 or
finer)
- Clean the heat sink with contact spray
and a non-linting cloth
Note! There already is a heat-
transfer film affixed to the
secondary diode.
- Do not apply any heat-transfer
compound in addition to this film
- Do NOT peel off the heat-transfer film
from the underside of the secondary
diode
- Put the diode holder (50) over the
secondary diode
- Insert 4 spacers (61) into the diode
holder
- Place the secondary diode, complete
with the diode holder and the inserted
spacers (61), onto the heat sink
- Slightly tighten the M4x14-TX20
screws (31)
Note! Before you tighten the
M4x14-TX20 screws (31), the
secondary diode must be lying
completely flat on the heat sink,
without any gaps.
- Tighten the M4x14-TX20 screws (31)
with a torque of 2,1 Nm